Gate valve for runways



Aug 2, 1932 D. L.. @RAMP GATE VALVE FOR RUNWAYS Filed NOV. 16, 195].

Patented Aug. 2, 1932 vnaar DAVID LEO CRAM?, OF KIRKLAND LAKE, ONTfsRIOyGANADA GATE VALVE FOR Y RUNWAYS Application filed. November 16, 193.1. Serial'No. 575,303.

The invention relates to a gate valve for runways, as described in the present specitication and illustrated in the accompanying drawing which forms part of the same.k

i) The invention consists essentially of the novel means employed in retarding the progi'ess of ore or waste material traveling down the chutes and also means for allowing the ore 1 or waste material to gradually pass l through as pointed outv in the claims for novelty following `an explanation in detail of an acceptable form of the invention.

The objects of the invention are to speed up loading operations in mines and other l* places; to devise means whereby the ore or other material will be regulated in its discharge from the runway and thereby eliminate the danger of accidents to the workmen and others as well as avoid possible dan- 1 gers to the chute structure and the loading cars; to simplify the chute controls for handling the material; and generali f to pro-- vide a. gate valve for runways which rwill be comparatively cheap to manufacture, durable in construction, and efficient for the purpose set forth.

In the drawing, Figure 1 is a side sectional view of the chute and gate valve.

Figure 2 is a Vvertical sectional view taken 3*" on the lines 2-2 of Figure 1.

Figure 8 Yis an enlarged detail of one of the gate weights.

Figure 4 is an enlarged perspective view of the lift bar.

near to one another to form obstructions to l n the passage of ore down the runway 14. These chains are secured by loops to the weights or balls 16 which trail on the inclined flooring of the runway 14.

u The chains continue in the links 17 from the loops 18 of the weights 16 and are at- 23 journalled in the bracket 24 V its closed position;

f' Figure 5 is a side sectional view of a modi-V .others which so often occurs in loading opertached by shackles 19 to the lift bar 20 which is supported from a structural beam 21 byA means of a cable 22 trained over the pulley which jis secured to the structural beam 21. The cable 55 22 is secured at'its lower end in the ring 26 which engages the looped ends 27 and 28 of the arms 29 and 30 pivotally mounted to the litt bar 20, although it is understood that cables could be utilized in place of the arms 29 and 80. Y

In the operation of the gate valve in its applicationV to the chutes of various descriptions, such as chutes in mines or in car-load ers, etc., the" waste ore or other 'substance 65 slides down the runway until it engages with` thegate valve which of course is lowered to The material will con- Vsequently come into engagement with the chainsof the gate which will act as a re- 7G sistance thereto whilethe weights will form a barrier in preventing Vthe material from sliding through. y

vWhen it is desired to' discharge the material the lift bar of the gate is raised which immediately raises the weights from engagement with the runway and thereby enables the material to slip therebeneath and the speed'or quantity of material that is required is controlled by merely" lifting or lowering SG the lift bar which lifts up the weights and also the chain lengths and naturally the higher'the lift bar is raised, the greater quantity of ore-or other material will be discharged.

WVhen it is desired to stop the discharge of ore or other' material, the lift baris simply lowered and it will immediately engage with the onrushing material, entangling the same among the chain lengths and immediately stop the flow. y

In this way it will be seen that the common danger of a sudden `rush of material down thefchute will be eliminated and thereby avoid severe injuries to workmen and ations.

The size of the chains and chain weights is of course guided by thework in ,which it is `to be applied such as'if it is to be'used for m, loading cars, the chains and weightsmay be 1L smaller or greater as desired and the same is reference to mines or in loading ships.

It is of course understood that the gate valve may be altered to meet with the various requirements, such as, if it is used for grain, a shield or other wall structure may be added to the lift bar but the chain lengths will remain.

lVhat I claim is:

1. A gate valveV for runways comprising vertically hung parallel chains weighted and trailing on a runway and means for lifting the trailing weights.

2. A gate valve for runways comprising hanging chains adjacent to one another and looped to ball weights in a runway and cables linked to said weights and trained over a pulley suitably supported.

3. In a gate valve for runways, weights engaging with the inclined flooring of said runway, flexible means connected to said weights and rearwardly supported to the upper portion of the runway and flexible means secured to a lifting means adjacent to the discharge outlet of the runway and connected to said weights, and means for operating said lifting means.

4. In a gate Valve for runways, a flexible gate secured at one end to the runway structure and pivotally mounted and operated at the other end of the runway structure and having intervening weights adapted to abut thev inclined flooring of said runway.

5. In a gate valve for runways, al flexible gate supported by a cross bar at one end of the runway and at the other end to a liftI bar supported and operated from a cross beam of the runway, and weights abutting the inclined flooring of said runway and secured tol said flexible gate between said lift bar and cross bar.

6. In a gate valve for runways, a rear support and a forward support secured to the discharge ends of the runways, chain lengths extending downwardly Yfromsaid rear support and said forward support, and chain weights connecting the rear and forward chain lengths together and abutting the inclined flooring of the runways.

7. In a gate valve for runways, a rear support and a forward support secured to the discharge ends of the runways, a plurality of chain lengths projecting downwardly from said rear support, a lift bar supported from said forward support and having chain lengths projecting therefrom and weights connecting the rear and forward chain lengths together and engaging with the sloping flooring of the runway and means for lifting and lowering said lift bar.

" supported from a lift bar and secured by loops at their lower ends to chain balls, and Ilpeans for lifting and lowering said lifting 9. In a gate valve for runways, a rear support and a forward support secured to said runways, a plurality of hanging chains se cured to said rear support, a plurality of weights having loops secured to the lower ends of said hanging chains and abutting the sloping flooring of said runway, a lift bar having a yoke and a cable connected thereto and supported from said forward support and suitably operated, a plurality of hanging chains secured to said lift bar and of shorter length than of said rear hanging chains and connected by loops to said weights.

l0. In a gate valve for runways, forward and rear supports, hanging chains secured to said forward and rear supports, and

weights intervening in each of said hanging (All 

